Concentrated animal-dip.



umrnn STATES PATENT ounrc BUBERT M. CHA PIN, OF WASHINGTON, DISTRICT OFCOLUMBIA.

CONGENTRA'IED ANIMAL-DIP.

No Drawing.

I Specification of Letters Patent. Patented Dec, 31, 1912, Applicationfiled August 14, 1912. Serial No. 715,018.

(DEDICATED TO THE PUBLIC.)

District of Columbia, prays that Letters Patent may be granted to him ona new'and useful Concentrated Animal-Dip. A

This application is made under the act of March 3, 1883, chapter 143 (22Stat, 625), and the invention herein described and claimed may be usedby the Government of the United States or any of its officers oremployees in the prosecution of work for the United- States or by anyperson in the United States without the payment of any royalty thereon.

The object of my invention is to provide a concentrated animal dipcontaining alkali arsenite, soap, pine tar, and other valuableingredients, miscible with water, to form a uniform liquid insecticideappropriate and desirable for the dipping or spraying of cattle or otheranimals with a view of ridding them of Texas fever ticks, or

' other deleterious parasitic insects. It is mals.

well known that a solution containing alkali arsenite, soap, pine tar,and similar materials forms an efi'ective and useful bath for destroyingTexas fever ticks and other insects which infest cattle and other ani-Under ordinary conditions such a bath containing alkali arsenite, soap,and pine tar cannot be prepared in highly concentrated form, for thereason that ordinary soaps are-nearly insoluble in strong alkaliarsenite solution, being salted out in a manner well known to chemists.In experiments, I have discovered that this difficulty may be overcomeby the addition of a proper quantity of commercial ethyl alcohol to amixture of alkali arsenite, soap and pine tar.

My invention consists in the proper proportioning and blending ofalcohol, Water,

' alkali arsenite, soap, pine tar and other valuable ingredients so thata uniform and highly concentrated liquids'hall result suitable fordestroying Texas fever ticks and other insects that infest animals. Inmaking my insecticide, I prepare a suificient quantity of potashsolution by dissolving an appropriate weight of high-grade commercialcaustic potash in an equal weight of water, and then determine the exactstrength of the solution by titration. I then prepare a practicallyneutral potash linseed oil soap by whatis chemically known as the coldprocess by mixing the first-mentioned potash solution with linseed oilin calculated proportions approximating thirty -(30) pounds potashsolution to seventy pounds linseed oil. Following this, I weigh a sampleof the pine tar to be employed and dissolve the same in 95 alcohol, andthen determine by titration the amount of acids contained therein, usingalkali blue as an indicator I also dissolve 100 pounds of powdered whitearsenic containing not less than 99 per cent. arsenious oxid by stirringwith a sufficient quantity of the ,i'LBIGlDbB- fore-mentioned causticpotash so ution to combine with all the arsenic to form KAsO, plus anamount sufiicient to combine with the acids calculated to exist in 100pounds oftar, the exact total amount'necessary be ing approximately 125pounds. To the solution of potassium arsenite I add. 100 pounds of soapprepared in the manner hefeinbefore described, together with 100 poundsof the pine tar, and then stir the whole until the soap is thoroughlydisintegrated and blended with the tar. I then add approximately 12gallons of commercial ethyl alcohol and sufficient water to make thewhole volume. about 55 gallons, and again stir the mixture until all theingredients are completely dissolved. Upon the completion of thisoperation, I add more water in quantity suficient to make In preparingthe product, caustic soda may be substituted in Whole or in part forcaustic potash. Other fatty materials, such as corn oil, cottonseed oil,fish oil, or commercial red oil or rosin maybe substituted Wholly or inpart for linseed oil, While the alcohol employed may have beenpreviously denatured in an appropriate manner. The materials may beblended in diflerent order and in proportions diflerent from those givenWithout changing the essentials of my inventions.

Having thus described my invention, ll claim: i

1. A concentrated animal dip composition containing alkali arsenite,soap, pine weenie tar, alcohol and water in such proportions as to forma uniformly blended mixture.

2. A concentrated animal dip composition containing potassium arseniteabout 148 pounds, potash-linseed oil soap 100 pounds, neutralized pinetar 100 pounds, commercial ethyl alcohol 12 gallons, and sufiicientWater to makea total volume of 58 gallons.

In testimony whereof I afix my signature in the presence of twosubscribed witnesses.

ROBERT M. CHAPIN.

